The body's ability to absorb fluids is limited to approximately __________ per hour?

• A. 1 pint (0.5 L)
• B. 1 gallon (4 L)
• C. 1 quart (1 L)
• D. 1 ounce (30 mL)

Answer: (C)

The body can absorb fluids at a limit set by how fast the stomach empties and the small intestine can move water into the bloodstream. In practical terms, about one liter of fluid can be absorbed each hour. That’s why this amount is the commonly cited cap for hydration during rest and recovery: it matches the gut’s maximum efficient absorption rate. Drinking more than that in a short period won’t speed hydration and can lead to bloating, nausea, or diarrhea, because the extra fluid isn’t absorbed promptly. So, roughly one quart (about 1 liter) per hour is the best-fit answer.